Source : Free On-Line Dictionary of Computing

Weenix
     
        /wee'niks/ An {ITS} fan's derogatory term for {Unix}, derived
        from {Unix weenie}.  According to one noted ex-{ITS}er, it is
        "the operating system preferred by Unix Weenies: typified by
        poor modularity, poor reliability, hard file deletion, no file
        version numbers, case sensitivity everywhere, and users who
        believe that these are all advantages".  Some {ITS} fans
        behave as though they believe Unix stole a future that
        rightfully belonged to them.
     
        [{Jargon File}]
     
        (1995-01-18)